connect the pipe to the crankcase, leave the oil pipe dis-connected at the oil tank on the side of the obm, start obm and let it tick over untill oil comes out of the pipe without air bubbles then refit to oil tank on the side of the obm,now you can either stop the obm and top up the oil tank on the obm by hand or keep it ticking over with the cap on the oil tank either removed or some have a bleed hole in them , do not leave an air space in the oil bottle on the side of the obm as it could give you fase warnings , remember No air space in the oil bottle on the side of the obm.
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